James j



J.-.J. L AWLER. Lighting Device.

No..224,192. Patented Feb. 3, y1880.

" W'r-tnesses. l l *Y Inve or f M m f ".PErERS. FHOu-UTMOGRAHEH,WASHINGTON n C UNITED STATES PATENT OFFICE.

JAMEs J; LAwLEa, or scnANToN, PENNsYLvANrA, AssleNoa To'HiMsELEANDfJAMEs lnvEnHAnr,.orf,SAME PLACE. i

"-Lie nfl-,ING DEVICE.:

SPECIFICATION `forruilig part.of,.Letters Patent.- No..2l24,192, datedIebruary` 3, 1880.

Application led: July 14, 1879.

To all whom t mtr/y concern:

Be it known that I, .TAMEsJ *LAwLER'yof Scranton, Lackawanna county, in1thei'State of Pennsylvania, have invented certain new and useful`Improvementsrelating-to Gas-Lighting; and I do hereby declare thefollowing to be a full and exact description thereof.

The accompanying drawings form a part of this specification, andrepresent vwhatf-I con 1o sider the best means of carryingV out tliein=vention.

Figure 1 is a vertical section. Fig. 2 represents a face view inelevation'withthefcapf and protects a constant jet from the small pas-vz 5 sage P. This passage is 'in' constantV communication with theinterior of the gas-pipe B, and the jet therefrom continues to burnunder all circumstances, ready to ignite the main jet whenever it shallissue from the -Vlavatip N.

3o This latter is connected in the usual manner, and ada-pted to performits usual functions of discharging gas in a bright flame adapted toproduce the desired illumination. Ahalf-way or intermediate small burneris marked m.

3 5 E is aconical valve, closingfrom below, and controlling-the flow ofgas to the tip N. The valve has a stem,f, which plays through adiaphragm. l

I is a spiral spring of gentle force.

4o rocking shaft mounted gas-tight in the casting A, but carefullyfitted, so as to turn with moderate force. A portion contiguous to thevalve F is cutaway, so that when the shaft R y is in one position itwill leave the valve F free to be closed bythe force of the spring I;but when the shaft R is partiallyvturned it will strike the valve Fandopen it. The protrudf ing end of the shaft R has two rigid arms, R R2.The whole is inclosed in a metal casing,

5o L, with a removable front, M, which protects Risa it from disturbanceand allows examination and lubrication, if desired.

Dis a Aloosely-working piston, having considerableweight, mounted in avertical cylin- Wis a rubber bulb, similarto that employed in theMattson syringe, and w is a tube of ru b- 1ber or other suitablematerial com muuicating which tends to hold it in av vertical position.

There are, furthermore, two fixed guides; G

` G2, which at each descent cause the piece J to assume the correctcentral'position.`

The upper end of the piece J is formed with two wide notches, jjz. Whenthe pistou l) is thrown up by the sudden increase of press- 7o jurebelowit,due tothe construction of the bulb W, one arm, R or RZ, iscarried upward with a curved motion by the piece J ,"propelled by thearm d. As the piece J rises out of `contactwith -the guide-pieces G G?one of its notches, j or ,72, will receive the corresponding arm, lt orR2, and force it upward, thereby rocking the shaft R in one direction.

, Whenthe' notch j' is engaged withv the arm R it will deiect thepush-piece J to the left, 8o and thus cause the push-piece to moveeutirely clear of the opposite arm, R2. Onv the descending movement thefree swiveling of the push-piece J will allow it to movedown withouteffect. On the next risc thevnotch jZ will engage. with the arm R2, and,raisingV the latter, will restore the rocking shaft R to its originalposition. Each elevation of the arm R liberates the valve F and allowsit to rise with the force of the spring I and shut 9o oft' the gas. Thenext movement of the piston, by elevating the arm R2 and turning theshaft R in the opposite. direction, causes the latter to' assumel aposition which holds the valve open. Thus conditioned the gas flows 9 5liberally to the main burner N, and causes a strong jet, which beingignited by the small llame from the passage P and m gives the requiredillumination.

So soon as it shall be desired to extinguish 10o the light anothercompression of the bulb W causes another sudden elevation of the pistonD and pusli-piece J, which will, by acting with the notch j and on thearm R', aga-in turn the rocking shaft Rinto the position for closing,and the main `jet will be extinguished.

I have described the small passage P as constantly open. This is truerelatively to the alternate letting on and oi oi' the jet from the mainburner N. It burns constantly, but with so small a flame that theconsumption of gas is insignificant The shield C performs an importantfunction in protecting this slight iiame from being extinguished byaccidental causes.

When it is required for any cause to put the burner permanently out ofuse the screwplug G is turned inward, and the passage P thereby isclosed.

The apparatus may be used for lighting the gas in ordinary roomswherever the burner, by reason of its height or other causes, isdifiicult of access. It may be made especially useful in sleeping-roomsby placing the bulb \V at the head of the bed or other convenient placeto allow a light to be made and extinguished iu any distant part of theroom to determine the time, or for any other purpose, without thenecessity of rising or of much eX- exertion.

A feature to which I attach much importance is the small burner m midwaybetween the main illuininating-burner N and the smallconstantly-discharging burner P. f This small burner m receives gas assoon as the gas is admitted to the main burner through the pipe B abovethe valve F, and by its igiiiting from the small constantly-burningilame P is sure to light the gas escaping from the main burner N withoutdelay. This half-way burner m may be a sutiiciently large file-groove inthe side of the nipple of the burner N, or may be made in the uprightpipe or burner.

Modifications may be made. The apparatus may be used with two or moregas-lights, and

their connections'operated from the same pipe W or branches therefrom.

The spring I may be omitted and the device worked with tolerable successwith the push-piece J brought into the correct positionA simply by theguides G G1. a

The invention may be Worked by a cylinder and piston, a bellows, orother ordinary device for inducing the sudden increase of pressure ofthe air in place of the hand-bulb W. It may also be worked with irongas-pipes or other pipes in place of the flexible pipe w. I propose touse it for lighting the lamps of streets, for lighting a whole sectionof a city or town at once, by a motion communicated from a pressure ofair through pipe w, or its equivalent, communicated from a strong handor power' device at the central office.

I claim as my inventionl. In combination with a main gas-tip, N, andsmall constantly-burning jet P, the pipe w, with means for communicatingchanges in the pressure of air from a distant point, and avalve-operating device7 R R R2, with devices for causing it to be turnedalternately in opposite directions by the successive compressions of theair, as herein specified.

2. In combination with the main burner N and small igniting-jet P, theshaft R, with its arms R R2, arranged as shown relatively to the pistonD, and loosely-hinged piece J, and means w W for inducing changes in thepressure of air from a distant point, as herein specified.

3. In combination with a main gas-tip, N, and small constant burner P,theintermediate burner, mf, as and for the purpose herein specied.

In testimony whereof' I have hereunto set my hand this 10th day of July,1879, in the presence of two subscribing witnesses.

JAMES J. LAWLER.

Witnesses:

E. J. LYNETT, F. A. BEAMIsH.

